basename usage in linux

作用：去掉文件的目录和后缀

1.去掉文件路径

1 [email protected]:~/ci/script$ basename /backup/jenkins/ci/script/Release.sh.bak
2 Release.sh.bak

2.去掉文件后缀

1 [email protected]:~/ci/script$ basename /backup/jenkins/ci/script/Release.sh.bak .bak
2 Release.sh
3 [email protected]:~/ci/script$ ls
4 Release.sh  Release.sh.bak
5 [email protected]:~/ci/script$

3.考虑后缀数量

[email protected]:~/ci/script$ basename /backup/jenkins/ci/script/Release.sh.bak.old .old
Release.sh.bak
[email protected]:~/ci/script$ basename /backup/jenkins/ci/script/Release.sh.bak.old .old .bak
basename: extra operand `.bak‘
Try `basename --help‘ for more information.

4.不正常的后缀

1 [email protected]:~/ci/script$ basename ab b
2 a

5.其他

[email protected]—— 打印参数

$#—— 打印参数个数

$?—— 最后一个命令/函数的执行结果，0为成功，非0失败

$!—— 最后一个后台运行进程的PID

$$—— 最后一个后台运行进程的PPID